KK, big pot, turn Ace

[jimmy44]

You're range is OKish range if it was a TAG
For a 54/10 FISH 3bet calling range you'll need to add 22+, Axs, Kxs, Qxs and a lot more stuff like KTo, KQo, KJo, QTo, Q9o, etc.

As for the flop villain will continue with any 2 hearts he called the flop with + 9T, QT, Q9, 99, TT, Jx, 8x, 88, 66, JJ+. The only Ax hands he would call with on the FLOP would be Axs.
You're pretty much OK on the turn. As we have only $33 left on a $52 pot I would jam and be pretty happy (he would easily call with Jx).

[rong]

You're range is OKish range if it was a TAG
For a 54/10 FISH 3bet calling range you'll need to add 22+, Axs, Kxs, Qxs and a lot more stuff like KTo, KQo, KJo, QTo, Q9o, etc.

As for the flop villain will continue with any 2 hearts he called the flop with + 9T, QT, Q9, 99, TT, Jx, 8x, 88, 66, JJ+. The only Ax hands he would call with on the FLOP would be Axs.
You're pretty much OK on the turn. As we have only $33 left on a $52 pot I would jam and be pretty happy (he would easily call with Jx).

If he only raises preflop 10%, how can we add all that other crap into his range for raising & then calling a 3bet?

[jimmy44]

My bad, I missed fish was the initial raiser. I thought he was just calling the 3bet.

However, he's still raising from the HJ position, so:
77+, ATs+, AJ+. (from your post)
But as he's a fish you need to add much more:
22+, Axs+, 9Ts+, KQ, KJ, QJ
(take a note this is based on 43 hands from villain, it can be wider or tighter).

As you can see there are still worse hands he can have on TURN and with $33 on a $52 pot it's a easy push. (He won't fold QQ either). You would be astonished to push and see that villain calls with T9 (and of course he hits ).